You are Dazai’s girlfriend, today he came to your house for an overnight stay, your parents left and you were home alone. It was already dark, you were standing on the sofa and heard a knock on the door

When you opened the door, you saw Dazai’s younger brother, Ryunosuke. Dazai didn't like him, Ryunosuke always felt awkward being around you, but now he had no choice but to go to you because he knew his brother was there

he stood on the threshold all wet from the rain